Monstrous Tornado Strikes OklahomaLightning from a tornadic thunderstorm passing over Clearwater, Kansas strikes at an open field May 19, 2013. A massive storm front swept north through the central United States on Sunday, hammering the region with fist-sized hail, blinding rain and tornadoes, including a half-mile wide twister that struck near Oklahoma City. News reports said at least one person had died.

Monstrous Tornado Strikes OklahomaA child calls to his father after being pulled from the rubble of the Tower Plaza Elementary School following a tornado in Moore, Okla., Monday, May 20, 2013. A tornado as much as a mile (1.6 kilometers) wide with winds up to 200 mph (320 kph) roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school.

Monstrous Tornado Strikes OklahomaA tornado, one of several which touched down, is pictured near Viola, in Kansas May 19, 2013. A massive storm front swept north through the central United States on Sunday, hammering the region with fist-sized hail, blinding rain and tornadoes, including a half-mile wide twister that struck near Oklahoma City. News reports said at least one person had died.

Monstrous Tornado Strikes OklahomaA woman carries a child through a field near the collapsed Plaza Towers Elementary School in Moore, Okla., Monday, May 20, 2013. The relationship between the woman and the child was not immediately known. A tornado as much as half a mile (.8 kilometers) wide with winds up to 200 mph (320 kph) roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school.

Monstrous Tornado Strikes OklahomaAn American flag lies on top of an overturned car after a tornado struck Moore, Oklahoma, May 20, 2013. A 2-mile-wide (3-km-wide) tornado tore through the Oklahoma City suburb of Moore on Monday, killing at least 51 people while destroying entire tracts of homes, piling cars atop one another, and trapping two dozen school children beneath rubble.

Monstrous Tornado Strikes OklahomaA tornado passes across south Oklahoma City, Monday, May 20, 2013. A monstrous tornado roared through the Oklahoma City suburbs, flattening entire neighborhoods with winds up to 200 mph, setting buildings on fire and landing a direct blow on an elementary school.

Monstrous Tornado Strikes OklahomaA child is passed along a human chain of people after being pulled from the rubble of the Plaza Towers Elementary School in Moore, Okla., and passed along a human chain of rescuers Monday, May 20, 2013. A tornado as much as a mile (1.6 kilometers) wide with winds up to 200 mph (320 kph) roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school.

Monstrous Tornado Strikes OklahomaA man looks at metal debris twisted around a tree along a street, after a tornado struck Moore, Oklahoma, May 20, 2013. A huge tornado with winds of up to 200 miles per hour (320 kph) devastated the Oklahoma City suburb of Moore on Monday, ripping up at least two elementary schools and a hospital and leaving a wake of tangled wreckage.

Monstrous Tornado Strikes OklahomaThis frame grab provided by KWTV shows a tornato in Oklahoma City Monday, April 20, 2013. Television footage shows flattened buildings and fires after a mile-wide tornado moved through the Oklahoma City area.

Monstrous Tornado Strikes OklahomaAbby Madi (L) and Peterson Zatterlee comforts Zaterlee's dog Rippy, after a tornado struck Moore, Oklahoma, May 20, 2013. A 2-mile-wide (3-km-wide) tornado tore through the Oklahoma City suburb of Moore on Monday, killing at least 51 people while destroying entire tracts of homes, piling cars atop one another, and trapping two dozen school children beneath rubble.

Monstrous Tornado Strikes OklahomaThis aerial photo shows the remains of houses in Moore, Okla., following a tornado Monday, May 20, 2013. A tornado roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school.

Monstrous Tornado Strikes OklahomaStorm chaser videographer and photographer Brad Mack records a tornado near a home in South Haven, in Kansas May 19, 2013. A massive storm front swept north through the central United States on Sunday, hammering the region with fist-sized hail, blinding rain and tornadoes, including a half-mile wide twister that struck near Oklahoma City. News reports said at least one person had died.

Monstrous Tornado Strikes OklahomaGas pumps islands are seen without pumps after a tornado struck Moore, Oklahoma, May 20, 2013. A 2-mile-wide (3-km-wide) tornado tore through the Oklahoma City suburb of Moore on Monday, killing at least 51 people while destroying entire tracts of homes, piling cars atop one another, and trapping two dozen school children beneath rubble.

Monstrous Tornado Strikes OklahomaPeople look for belongings after a tornado struck Moore, Oklahoma, May 20, 2013. A 2-mile-wide (3-km-wide) tornado tore through the Oklahoma City suburb of Moore on Monday, killing at least 51 people while destroying entire tracts of homes, piling cars atop one another, and trapping two dozen school children beneath rubble.

Monstrous Tornado Strikes OklahomaA fire burns in the Tower Plaza Addition in Moore, Okla., following a tornado Monday, May 20, 2013. A tornado as much as a mile (1.6 kilometers) wide with winds up to 200 mph (320 kph) roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school.

Monstrous Tornado Strikes OklahomaA man stands among the wreckage after a tornado struck Moore, Oklahoma, May 20, 2013. A huge tornado with winds of up to 200 miles per hour (320 kph) devastated the Oklahoma City suburb of Moore on Monday, ripping up at least two elementary schools and a hospital and leaving a wake of tangled wreckage.

Monstrous Tornado Strikes OklahomaMOORE, OK - MAY 20: People walk through a damaged area near the Moore Warren Theater after a powerful tornado ripped through the area on May 20, 2013 in Moore, Oklahoma. The tornado, reported to be at least EF4 strength and two miles wide, touched down in the Oklahoma City area on Monday killing at least 51 people.

Monstrous Tornado Strikes OklahomaJoAnn Anderson sorts through the rubble of her home after a tornado on Monday, May 20, 2013 in Moore, Okla. A monstrous tornado roared through the Oklahoma City suburbs, flattening entire neighborhoods with winds up to 200 mph, setting buildings on fire and landing a direct blow on an elementary school.

Monstrous Tornado Strikes OklahomaRescuers search through rubble after a tornado struck Moore, Oklahoma, May 20, 2013. A 2-mile-wide (3-km-wide) tornado tore through the Oklahoma City suburb of Moore on Monday, killing at least 51 people while destroying entire tracts of homes, piling cars atop one another, and trapping two dozen school children beneath rubble.

Monstrous Tornado Strikes OklahomaA tornadic thunderstorm passes over Clearwater, in Kansas May 19, 2013. A massive storm front swept north through the central United States on Sunday, hammering the region with fist-sized hail, blinding rain and tornadoes, including a half-mile wide twister that struck near Oklahoma City. News reports said at least one person had died.

Monstrous Tornado Strikes OklahomaRescue workers dig through the rubble of a collapsed wall at the Plaza Tower Elementary School to free trapped students in Moore, Okla., following a tornado Monday, May 20, 2013. A tornado as much as a mile (1.6 kilometers) wide with winds up to 200 mph (320 kph) roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school.

Monstrous Tornado Strikes OklahomaMOORE, OK- MAY 20: Dana Ulepich searches inside a room left standing at the back of her house destroyed after a powerful tornado ripped through the area on May 20, 2013 in Moore, Oklahoma. The tornado, reported to be at least EF4 strength and two miles wide, touched down in the Oklahoma City area on Monday killing at least 51 people.

Monstrous Tornado Strikes OklahomaMOORE, OK - MAY 20: The hood of car is wedged into the front window of the Moore Medical Center after a powerful tornado ripped through the area on May 20, 2013 in Moore, Oklahoma. The tornado, reported to be at least EF4 strength and two miles wide, touched down in the Oklahoma City area on Monday killing at least 51 people.

Monstrous Tornado Strikes OklahomaDamaged cars are seen in the parking lot of Moore Hospital after a tornado struck Moore, Oklahoma, May 20, 2013. A huge tornado with winds of up to 200 miles per hour (320 kph) devastated the Oklahoma City suburb of Moore on Monday, ripping up at least two elementary schools and a hospital and leaving a wake of tangled wreckage.

Monstrous Tornado Strikes OklahomaA boy is pulled from beneath a collapsed wall at the Plaza Towers Elementary School following a tornado in Moore, Okla., Monday, May 20, 2013. A tornado as much as a mile (1.6 kilometer) wide with winds up to 200 mph (320 kph) roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on the elementary school.

Monstrous Tornado Strikes OklahomaResidents and rescuers look over the damage after a tornado struck Moore, Oklahoma, May 20, 2013. A huge tornado with winds of up to 200 miles per hour (320 kph) devastated the Oklahoma City suburb of Moore on Monday, ripping up at least two elementary schools and a hospital and leaving a wake of tangled wreckage.

Monstrous Tornado Strikes OklahomaA dead dog lies covered in the driveway of a home after a tornado struck Moore, Oklahoma, May 20, 2013. A huge tornado with winds of up to 200 miles per hour (320 kph) devastated the Oklahoma City suburb of Moore on Monday, ripping up at least two elementary schools and a hospital and leaving a wake of tangled wreckage.

Monstrous Tornado Strikes OklahomaStorm chasers get close to a tornadic thunderstorm, one of several tornadoes that touched down, in South Haven, Kansas, May 19, 2013. A massive storm front swept north through the central United States on Sunday, hammering the region with fist-sized hail, blinding rain and tornadoes, including a half-mile wide twister that struck near Oklahoma City. News reports said at least one person had died.

Monstrous Tornado Strikes OklahomaA boy is pulled from beneath a collapsed wall at the Plaza Towers Elementary School following a tornado in Moore, Okla., Monday, May 20, 2013. A tornado as much as a mile (1.6 kilometers) wide with winds up to 200 mph (320 kph) roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school.

Monstrous Tornado Strikes OklahomaPeople salvage belongings after a huge tornado struck Moore, Oklahoma May 20, 2013. A 2-mile-wide (3-km-wide) tornado tore through the Oklahoma City suburb of Moore on Monday, killing at least 51 people while destroying entire tracts of homes, piling cars atop one another, and trapping two dozen school children beneath rubble.

Monstrous Tornado Strikes OklahomaA girl walks, wrapped in a blanket, near the Moore Hospital after a tornado destroyed buildings and overturned cars in Moore, Oklahoma, May 20, 2013. A huge tornado with winds of up to 200 miles per hour (320 kph) devastated the Oklahoma City suburb of Moore on Monday, ripping up at least two elementary schools and a hospital and leaving a wake of tangled wreckage.

Monstrous Tornado Strikes OklahomaThe funnel of a tornadic thunderstorm almost touches the ground near South Haven, in Kansas May 19, 2013. A massive storm front swept north through the central United States on Sunday, hammering the region with fist-sized hail, blinding rain and tornadoes, including a half-mile wide twister that struck near Oklahoma City. News reports said at least one person had died.

Monstrous Tornado Strikes OklahomaA damaged police car is seen after a tornado struck Moore, Oklahoma, May 20, 2013. A 2-mile-wide (3-km-wide) tornado tore through the Oklahoma City suburb of Moore on Monday, killing at least 51 people while destroying entire tracts of homes, piling cars atop one another, and trapping two dozen school children beneath rubble.

Monstrous Tornado Strikes OklahomaA damaged police car is seen after a tornado struck Moore, Oklahoma, May 20, 2013. A 2-mile-wide (3-km-wide) tornado tore through the Oklahoma City suburb of Moore on Monday, killing at least 51 people while destroying entire tracts of homes, piling cars atop one another, and trapping two dozen school children beneath rubble.

Monstrous Tornado Strikes OklahomaA tattered American flag waves after a huge tornado struck Moore, Oklahoma, near Oklahoma City, May 20, 2013. A massive tornado tore through the Oklahoma City suburb of Moore on Monday, killing at least 51 people as winds of up to 200 miles per hour (320 kph) flattened entire tracts of homes, two schools and a hospital, leaving a wake of tangled wreckage.

Monstrous Tornado Strikes OklahomaMOORE, OK - MAY 20: People assess the damage after a powerful tornado ripped through the area on May 20, 2013 in Moore, Oklahoma. The tornado, reported to be at least EF4 strength and two miles wide, touched down in the Oklahoma City area on Monday killing at least 51 people.

Monstrous Tornado Strikes OklahomaA destroyed truck being blown off the 40 freeway is pictured with its damaged cargo after a tornado swept through Shawnee, in Oklahoma May 19, 2013. A massive storm front swept north through the central United States on Sunday, hammering the region with fist-sized hail, blinding rain and tornadoes, including a half-mile wide twister that struck near Oklahoma City. News reports said at least one person had died.

Monstrous Tornado Strikes Oklahoma

Abby Madi (L) and Peterson Zatterlee comforts Zaterlee's dog Rippy, after a tornado struck Moore, Oklahoma, May 20, 2013. A 2-mile-wide (3-km-wide) tornado tore through the Oklahoma City suburb of Moore on Monday, killing at least 51 people while destroying entire tracts of homes, piling cars atop one another, and trapping two dozen school children beneath rubble.